import asyncio
import sys
from .actor import follow_remote_actor, unfollow_remote_actor
from .database import DATABASE


def relay_list():
    print('Connected to the following instances or relays:')
    [print('-', relay) for relay in DATABASE['relay-list']]


def relay_follow():
    if len(sys.argv) < 3:
        print('usage: python3 -m relay.manage follow <target>')
        exit()

    target = sys.argv[2])

    loop = asyncio.get_event_loop()
    loop.run_until_complete(follow_remote_actor(target))

    print('Sent follow message to:', target)


def relay_unfollow():
    if len(sys.argv) < 3:
        print('usage: python3 -m relay.manage unfollow <target>')
        exit()

    target = sys.argv[2])

    loop = asyncio.get_event_loop()
    loop.run_until_complete(unfollow_remote_actor(target))

    print('Sent unfollow message to:', target)


TASKS = {
    'list': relay_list,
    'follow': relay_follow,
    'unfollow': relay_unfollow
}


def usage():
    print('usage: python3 -m relay.manage <task> [...]')
    print('tasks:')
    [print('-', task) for task in TASKS.keys()]
    exit()


def main():
    if len(sys.argv) < 2:
        usage()

    if sys.argv[1] in TASKS:
        TASKS[sys.argv[1]]()
    else:
        usage()


if __name__ == '__main__':
    main()